And how much lower would have it been if they had chosen to keep their existing nuclear and reduce/retire their coal and/or gas? Certainly if they did not want to build new nuclear that's one thing, but they chose to keep the emitting stuff, which was really stupid IMHO.
Even now it'd be viable to re-start some of Germany's nuclear if they really wanted to reduce emissions:
* https://www.radiantenergygroup.com/reports/restarting-german...
* PDF: https://www.radiantenergygroup.com/_files/ugd/ae75b7_bc5db59...